The length of reserve will vary greatly, so much so that I'm not even going to give you a solid number. Somewhere between one month and 4 years, depending on base.
People are getting all bases right out of training at the moment. There are crash pads in GEG, if you get stuck there. Living in the Northwest is great, and it's even better if you're based where you live. I'd honestly say that living in base at QX is one of the better regional gigs out there.
Come on over!